XT M785 brake bleeding problem

Just bleeding my brakes for the first time, I can't get the caliper syringe to push the oil into the system, it just resists and leaks around the edge of the tube/bleed nipple interface as I push harder.

Bleed nipple is open 1/4 turn, I can make oil come out of it but not in. Using the syringe on the caliper as instructed.

I couldn't get the pistons fully in without opening the bleed nipple a little bit, which is weird. this issue maybe related? can you get an airlock?

yeah got the small syringe on the lever, meant to say that above, using the epic bleed solutions kit which has the syringe instead of the funnel. I am stumped. Have bled Formula brakes and my reverb before without a problem.

1. Remove syringe piston and lube rubber plunger part with mineral oil. Test it to make sure it slides up and down nicely as it does expand if used before.

2. Load syringe with oil and mount to calliper bleed port (once air has been squeezed out).

3. Open the bleed hole at least 1/2 a turn, you can go a bit further it won't hurt the system at all. You need to this part to make the oil flow. no idea why they star a 1/4 turn?

4. it will slide on up smooth as (obviously given that the lever has the funnel attached, little plunger removed, and lever is not pressed in or anything.

5. run a fair amount of oil through, tighten up nice and tight at the calliper bleed port and your done at that end.

BTW - if you then bleed down you can test what I'm saying about opening up the bleed post more than 1/4 - no oil will come down if it's to tight at this point. ease it open till is flows nicely - then you know how much to turn the threads in the future.

You don't need a syringe to bleed Shimano XT. You take out the pads, put in the yellow spacer. Attach small ring spanner to the caliper bleed screw, add pipe and bottle to recieve fluid. NOTHING NEED GO IN AT THE CALLIPER END.

Remove the screw in the top of the resevoir on the lever, screw in the yellow funnel, pour in Mineral oil. Bleed from the lever end by pulling the lever and allowing oil to pass through the system via the now open bleed nipple, tighten up bleed nipple, release lever - repeat.

When its all good, pop the plunger in the funnel, replace the screw, pads etc. go riding.

You should always bleed XT brakes with the little silver screw wound out. Then after bleeding you can wind it in and it actually does something. It basically increases the volume of the master cylinder so by winding it out you get more fluid into the system. Winding it back in reduces the volume of the master cylinder again. If you bleed them with it wound in, winding it out afterwards does very little.

You should always bleed XT brakes with the little silver screw wound out. Then after bleeding you can wind it in and it actually does something. It basically increases the volume of the master cylinder so by winding it out you get more fluid into the system. Winding it back in reduces the volume of the master cylinder again. If you bleed them with it wound in, winding it out afterwards does very little.

Sounds the same as me bigdrew, lever felt solid with the yellow plastic spacer in but once pumped out for the pads was quite spongy. I did actually ride yesterday and I'm still alive, definitely a bit spongy and bite point is closer to the bars than I would like, but I can't be bothered bleeding them again for the time being.